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//===--- PCHReaderStmt.cpp - Stmt/Expr Deserialization ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Statement/expression deserialization. This implements the
// PCHReader::ReadStmt method.
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/PCHReader.h"
#include "clang/AST/StmtVisitor.h"
using namespace clang;
namespace {
class PCHStmtReader : public StmtVisitor<PCHStmtReader, unsigned> {
PCHReader &Reader;
const PCHReader::RecordData &Record;
unsigned &Idx;
llvm::SmallVectorImpl<Stmt *> &StmtStack;
public:
PCHStmtReader(PCHReader &Reader, const PCHReader::RecordData &Record,
unsigned &Idx, llvm::SmallVectorImpl<Stmt *> &StmtStack)
: Reader(Reader), Record(Record), Idx(Idx), StmtStack(StmtStack) { }
/// \brief The number of record fields required for the Stmt class
/// itself.
static const unsigned NumStmtFields = 0;
/// \brief The number of record fields required for the Expr class
/// itself.
static const unsigned NumExprFields = NumStmtFields + 3;
// Each of the Visit* functions reads in part of the expression
// from the given record and the current expression stack, then
// return the total number of operands that it read from the
// expression stack.
unsigned VisitStmt(Stmt *S);
unsigned VisitNullStmt(NullStmt *S);
unsigned VisitCompoundStmt(CompoundStmt *S);
unsigned VisitSwitchCase(SwitchCase *S);
unsigned VisitCaseStmt(CaseStmt *S);
unsigned VisitDefaultStmt(DefaultStmt *S);
unsigned VisitLabelStmt(LabelStmt *S);
unsigned VisitIfStmt(IfStmt *S);
unsigned VisitSwitchStmt(SwitchStmt *S);
unsigned VisitWhileStmt(WhileStmt *S);
unsigned VisitDoStmt(DoStmt *S);
unsigned VisitForStmt(ForStmt *S);
unsigned VisitGotoStmt(GotoStmt *S);
unsigned VisitIndirectGotoStmt(IndirectGotoStmt *S);
unsigned VisitContinueStmt(ContinueStmt *S);
unsigned VisitBreakStmt(BreakStmt *S);
unsigned VisitReturnStmt(ReturnStmt *S);
unsigned VisitDeclStmt(DeclStmt *S);
unsigned VisitAsmStmt(AsmStmt *S);
unsigned VisitExpr(Expr *E);
unsigned VisitPredefinedExpr(PredefinedExpr *E);
unsigned VisitDeclRefExpr(DeclRefExpr *E);
unsigned VisitIntegerLiteral(IntegerLiteral *E);
unsigned VisitFloatingLiteral(FloatingLiteral *E);
unsigned VisitImaginaryLiteral(ImaginaryLiteral *E);
unsigned VisitStringLiteral(StringLiteral *E);
unsigned VisitCharacterLiteral(CharacterLiteral *E);
unsigned VisitParenExpr(ParenExpr *E);
unsigned VisitUnaryOperator(UnaryOperator *E);
unsigned VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E);
unsigned VisitArraySubscriptExpr(ArraySubscriptExpr *E);
unsigned VisitCallExpr(CallExpr *E);
unsigned VisitMemberExpr(MemberExpr *E);
unsigned VisitCastExpr(CastExpr *E);
unsigned VisitBinaryOperator(BinaryOperator *E);
unsigned VisitCompoundAssignOperator(CompoundAssignOperator *E);
unsigned VisitConditionalOperator(ConditionalOperator *E);
unsigned VisitImplicitCastExpr(ImplicitCastExpr *E);
unsigned VisitExplicitCastExpr(ExplicitCastExpr *E);
unsigned VisitCStyleCastExpr(CStyleCastExpr *E);
unsigned VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
unsigned VisitExtVectorElementExpr(ExtVectorElementExpr *E);
unsigned VisitInitListExpr(InitListExpr *E);
unsigned VisitDesignatedInitExpr(DesignatedInitExpr *E);
unsigned VisitImplicitValueInitExpr(ImplicitValueInitExpr *E);
unsigned VisitVAArgExpr(VAArgExpr *E);
unsigned VisitAddrLabelExpr(AddrLabelExpr *E);
unsigned VisitStmtExpr(StmtExpr *E);
unsigned VisitTypesCompatibleExpr(TypesCompatibleExpr *E);
unsigned VisitChooseExpr(ChooseExpr *E);
unsigned VisitGNUNullExpr(GNUNullExpr *E);
unsigned VisitShuffleVectorExpr(ShuffleVectorExpr *E);
unsigned VisitBlockExpr(BlockExpr *E);
unsigned VisitBlockDeclRefExpr(BlockDeclRefExpr *E);
unsigned VisitObjCStringLiteral(ObjCStringLiteral *E);
unsigned VisitObjCEncodeExpr(ObjCEncodeExpr *E);
unsigned VisitObjCSelectorExpr(ObjCSelectorExpr *E);
unsigned VisitObjCProtocolExpr(ObjCProtocolExpr *E);
unsigned VisitObjCIvarRefExpr(ObjCIvarRefExpr *E);
unsigned VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E);
unsigned VisitObjCImplicitSetterGetterRefExpr(
ObjCImplicitSetterGetterRefExpr *E);
unsigned VisitObjCMessageExpr(ObjCMessageExpr *E);
unsigned VisitObjCSuperExpr(ObjCSuperExpr *E);
unsigned VisitObjCIsaExpr(ObjCIsaExpr *E);
unsigned VisitObjCForCollectionStmt(ObjCForCollectionStmt *);
unsigned VisitObjCAtCatchStmt(ObjCAtCatchStmt *);
unsigned VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *);
unsigned VisitObjCAtTryStmt(ObjCAtTryStmt *);
unsigned VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *);
unsigned VisitObjCAtThrowStmt(ObjCAtThrowStmt *);
unsigned VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E);
};
}
unsigned PCHStmtReader::VisitStmt(Stmt *S) {
assert(Idx == NumStmtFields && "Incorrect statement field count");
return 0;
}
unsigned PCHStmtReader::VisitNullStmt(NullStmt *S) {
VisitStmt(S);
S->setSemiLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitCompoundStmt(CompoundStmt *S) {
VisitStmt(S);
unsigned NumStmts = Record[Idx++];
S->setStmts(*Reader.getContext(),
StmtStack.data() + StmtStack.size() - NumStmts, NumStmts);
S->setLBracLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setRBracLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return NumStmts;
}
unsigned PCHStmtReader::VisitSwitchCase(SwitchCase *S) {
VisitStmt(S);
Reader.RecordSwitchCaseID(S, Record[Idx++]);
return 0;
}
unsigned PCHStmtReader::VisitCaseStmt(CaseStmt *S) {
VisitSwitchCase(S);
S->setLHS(cast<Expr>(StmtStack[StmtStack.size() - 3]));
S->setRHS(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
S->setSubStmt(StmtStack.back());
S->setCaseLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setEllipsisLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 3;
}
unsigned PCHStmtReader::VisitDefaultStmt(DefaultStmt *S) {
VisitSwitchCase(S);
S->setSubStmt(StmtStack.back());
S->setDefaultLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitLabelStmt(LabelStmt *S) {
VisitStmt(S);
S->setID(Reader.GetIdentifierInfo(Record, Idx));
S->setSubStmt(StmtStack.back());
S->setIdentLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
Reader.RecordLabelStmt(S, Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitIfStmt(IfStmt *S) {
VisitStmt(S);
S->setCond(cast<Expr>(StmtStack[StmtStack.size() - 3]));
S->setThen(StmtStack[StmtStack.size() - 2]);
S->setElse(StmtStack[StmtStack.size() - 1]);
S->setIfLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setElseLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 3;
}
unsigned PCHStmtReader::VisitSwitchStmt(SwitchStmt *S) {
VisitStmt(S);
S->setCond(cast<Expr>(StmtStack[StmtStack.size() - 2]));
S->setBody(StmtStack.back());
S->setSwitchLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
SwitchCase *PrevSC = 0;
for (unsigned N = Record.size(); Idx != N; ++Idx) {
SwitchCase *SC = Reader.getSwitchCaseWithID(Record[Idx]);
if (PrevSC)
PrevSC->setNextSwitchCase(SC);
else
S->setSwitchCaseList(SC);
// Retain this SwitchCase, since SwitchStmt::addSwitchCase() would
// normally retain it (but we aren't calling addSwitchCase).
SC->Retain();
PrevSC = SC;
}
return 2;
}
unsigned PCHStmtReader::VisitWhileStmt(WhileStmt *S) {
VisitStmt(S);
S->setCond(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
S->setBody(StmtStack.back());
S->setWhileLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitDoStmt(DoStmt *S) {
VisitStmt(S);
S->setCond(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
S->setBody(StmtStack.back());
S->setDoLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setWhileLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitForStmt(ForStmt *S) {
VisitStmt(S);
S->setInit(StmtStack[StmtStack.size() - 4]);
S->setCond(cast_or_null<Expr>(StmtStack[StmtStack.size() - 3]));
S->setInc(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
S->setBody(StmtStack.back());
S->setForLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 4;
}
unsigned PCHStmtReader::VisitGotoStmt(GotoStmt *S) {
VisitStmt(S);
Reader.SetLabelOf(S, Record[Idx++]);
S->setGotoLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setLabelLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
VisitStmt(S);
S->setGotoLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setStarLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setTarget(cast_or_null<Expr>(StmtStack.back()));
return 1;
}
unsigned PCHStmtReader::VisitContinueStmt(ContinueStmt *S) {
VisitStmt(S);
S->setContinueLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitBreakStmt(BreakStmt *S) {
VisitStmt(S);
S->setBreakLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitReturnStmt(ReturnStmt *S) {
VisitStmt(S);
S->setRetValue(cast_or_null<Expr>(StmtStack.back()));
S->setReturnLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitDeclStmt(DeclStmt *S) {
VisitStmt(S);
S->setStartLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
if (Idx + 1 == Record.size()) {
// Single declaration
S->setDeclGroup(DeclGroupRef(Reader.GetDecl(Record[Idx++])));
} else {
llvm::SmallVector<Decl *, 16> Decls;
Decls.reserve(Record.size() - Idx);
for (unsigned N = Record.size(); Idx != N; ++Idx)
Decls.push_back(Reader.GetDecl(Record[Idx]));
S->setDeclGroup(DeclGroupRef(DeclGroup::Create(*Reader.getContext(),
Decls.data(),
Decls.size())));
}
return 0;
}
unsigned PCHStmtReader::VisitAsmStmt(AsmStmt *S) {
VisitStmt(S);
unsigned NumOutputs = Record[Idx++];
unsigned NumInputs = Record[Idx++];
unsigned NumClobbers = Record[Idx++];
S->setAsmLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setVolatile(Record[Idx++]);
S->setSimple(Record[Idx++]);
unsigned StackIdx
= StmtStack.size() - (NumOutputs*2 + NumInputs*2 + NumClobbers + 1);
S->setAsmString(cast_or_null<StringLiteral>(StmtStack[StackIdx++]));
// Outputs and inputs
llvm::SmallVector<std::string, 16> Names;
llvm::SmallVector<StringLiteral*, 16> Constraints;
llvm::SmallVector<Stmt*, 16> Exprs;
for (unsigned I = 0, N = NumOutputs + NumInputs; I != N; ++I) {
Names.push_back(Reader.ReadString(Record, Idx));
Constraints.push_back(cast_or_null<StringLiteral>(StmtStack[StackIdx++]));
Exprs.push_back(StmtStack[StackIdx++]);
}
S->setOutputsAndInputs(NumOutputs, NumInputs,
Names.data(), Constraints.data(), Exprs.data());
// Constraints
llvm::SmallVector<StringLiteral*, 16> Clobbers;
for (unsigned I = 0; I != NumClobbers; ++I)
Clobbers.push_back(cast_or_null<StringLiteral>(StmtStack[StackIdx++]));
S->setClobbers(Clobbers.data(), NumClobbers);
assert(StackIdx == StmtStack.size() && "Error deserializing AsmStmt");
return NumOutputs*2 + NumInputs*2 + NumClobbers + 1;
}
unsigned PCHStmtReader::VisitExpr(Expr *E) {
VisitStmt(E);
E->setType(Reader.GetType(Record[Idx++]));
E->setTypeDependent(Record[Idx++]);
E->setValueDependent(Record[Idx++]);
assert(Idx == NumExprFields && "Incorrect expression field count");
return 0;
}
unsigned PCHStmtReader::VisitPredefinedExpr(PredefinedExpr *E) {
VisitExpr(E);
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setIdentType((PredefinedExpr::IdentType)Record[Idx++]);
return 0;
}
unsigned PCHStmtReader::VisitDeclRefExpr(DeclRefExpr *E) {
VisitExpr(E);
E->setDecl(cast<NamedDecl>(Reader.GetDecl(Record[Idx++])));
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitIntegerLiteral(IntegerLiteral *E) {
VisitExpr(E);
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setValue(Reader.ReadAPInt(Record, Idx));
return 0;
}
unsigned PCHStmtReader::VisitFloatingLiteral(FloatingLiteral *E) {
VisitExpr(E);
E->setValue(Reader.ReadAPFloat(Record, Idx));
E->setExact(Record[Idx++]);
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitImaginaryLiteral(ImaginaryLiteral *E) {
VisitExpr(E);
E->setSubExpr(cast<Expr>(StmtStack.back()));
return 1;
}
unsigned PCHStmtReader::VisitStringLiteral(StringLiteral *E) {
VisitExpr(E);
unsigned Len = Record[Idx++];
assert(Record[Idx] == E->getNumConcatenated() &&
"Wrong number of concatenated tokens!");
++Idx;
E->setWide(Record[Idx++]);
// Read string data
llvm::SmallVector<char, 16> Str(&Record[Idx], &Record[Idx] + Len);
E->setStrData(*Reader.getContext(), Str.data(), Len);
Idx += Len;
// Read source locations
for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
E->setStrTokenLoc(I, SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitCharacterLiteral(CharacterLiteral *E) {
VisitExpr(E);
E->setValue(Record[Idx++]);
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setWide(Record[Idx++]);
return 0;
}
unsigned PCHStmtReader::VisitParenExpr(ParenExpr *E) {
VisitExpr(E);
E->setLParen(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParen(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setSubExpr(cast<Expr>(StmtStack.back()));
return 1;
}
unsigned PCHStmtReader::VisitUnaryOperator(UnaryOperator *E) {
VisitExpr(E);
E->setSubExpr(cast<Expr>(StmtStack.back()));
E->setOpcode((UnaryOperator::Opcode)Record[Idx++]);
E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E) {
VisitExpr(E);
E->setSizeof(Record[Idx++]);
if (Record[Idx] == 0) {
E->setArgument(cast<Expr>(StmtStack.back()));
++Idx;
} else {
E->setArgument(Reader.GetType(Record[Idx++]));
}
E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return E->isArgumentType()? 0 : 1;
}
unsigned PCHStmtReader::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
VisitExpr(E);
E->setLHS(cast<Expr>(StmtStack[StmtStack.size() - 2]));
E->setRHS(cast<Expr>(StmtStack[StmtStack.size() - 1]));
E->setRBracketLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitCallExpr(CallExpr *E) {
VisitExpr(E);
E->setNumArgs(*Reader.getContext(), Record[Idx++]);
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setCallee(cast<Expr>(StmtStack[StmtStack.size() - E->getNumArgs() - 1]));
for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
E->setArg(I, cast<Expr>(StmtStack[StmtStack.size() - N + I]));
return E->getNumArgs() + 1;
}
unsigned PCHStmtReader::VisitMemberExpr(MemberExpr *E) {
VisitExpr(E);
E->setBase(cast<Expr>(StmtStack.back()));
E->setMemberDecl(cast<NamedDecl>(Reader.GetDecl(Record[Idx++])));
E->setMemberLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setArrow(Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
VisitExpr(E);
E->setBase(cast<Expr>(StmtStack.back()));
E->setIsaMemberLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setArrow(Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitCastExpr(CastExpr *E) {
VisitExpr(E);
E->setSubExpr(cast<Expr>(StmtStack.back()));
E->setCastKind((CastExpr::CastKind)Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitBinaryOperator(BinaryOperator *E) {
VisitExpr(E);
E->setLHS(cast<Expr>(StmtStack.end()[-2]));
E->setRHS(cast<Expr>(StmtStack.end()[-1]));
E->setOpcode((BinaryOperator::Opcode)Record[Idx++]);
E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
VisitBinaryOperator(E);
E->setComputationLHSType(Reader.GetType(Record[Idx++]));
E->setComputationResultType(Reader.GetType(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitConditionalOperator(ConditionalOperator *E) {
VisitExpr(E);
E->setCond(cast<Expr>(StmtStack[StmtStack.size() - 3]));
E->setLHS(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
E->setRHS(cast_or_null<Expr>(StmtStack[StmtStack.size() - 1]));
E->setQuestionLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 3;
}
unsigned PCHStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
VisitCastExpr(E);
E->setLvalueCast(Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {
VisitCastExpr(E);
E->setTypeAsWritten(Reader.GetType(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitCStyleCastExpr(CStyleCastExpr *E) {
VisitExplicitCastExpr(E);
E->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
VisitExpr(E);
E->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setInitializer(cast<Expr>(StmtStack.back()));
E->setFileScope(Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
VisitExpr(E);
E->setBase(cast<Expr>(StmtStack.back()));
E->setAccessor(Reader.GetIdentifierInfo(Record, Idx));
E->setAccessorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitInitListExpr(InitListExpr *E) {
VisitExpr(E);
unsigned NumInits = Record[Idx++];
E->reserveInits(NumInits);
for (unsigned I = 0; I != NumInits; ++I)
E->updateInit(I,
cast<Expr>(StmtStack[StmtStack.size() - NumInits - 1 + I]));
E->setSyntacticForm(cast_or_null<InitListExpr>(StmtStack.back()));
E->setLBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setInitializedFieldInUnion(
cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++])));
E->sawArrayRangeDesignator(Record[Idx++]);
return NumInits + 1;
}
unsigned PCHStmtReader::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
typedef DesignatedInitExpr::Designator Designator;
VisitExpr(E);
unsigned NumSubExprs = Record[Idx++];
assert(NumSubExprs == E->getNumSubExprs() && "Wrong number of subexprs");
for (unsigned I = 0; I != NumSubExprs; ++I)
E->setSubExpr(I, cast<Expr>(StmtStack[StmtStack.size() - NumSubExprs + I]));
E->setEqualOrColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setGNUSyntax(Record[Idx++]);
llvm::SmallVector<Designator, 4> Designators;
while (Idx < Record.size()) {
switch ((pch::DesignatorTypes)Record[Idx++]) {
case pch::DESIG_FIELD_DECL: {
FieldDecl *Field = cast<FieldDecl>(Reader.GetDecl(Record[Idx++]));
SourceLocation DotLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
SourceLocation FieldLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
Designators.push_back(Designator(Field->getIdentifier(), DotLoc,
FieldLoc));
Designators.back().setField(Field);
break;
}
case pch::DESIG_FIELD_NAME: {
const IdentifierInfo *Name = Reader.GetIdentifierInfo(Record, Idx);
SourceLocation DotLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
SourceLocation FieldLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
Designators.push_back(Designator(Name, DotLoc, FieldLoc));
break;
}
case pch::DESIG_ARRAY: {
unsigned Index = Record[Idx++];
SourceLocation LBracketLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
SourceLocation RBracketLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
Designators.push_back(Designator(Index, LBracketLoc, RBracketLoc));
break;
}
case pch::DESIG_ARRAY_RANGE: {
unsigned Index = Record[Idx++];
SourceLocation LBracketLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
SourceLocation EllipsisLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
SourceLocation RBracketLoc
= SourceLocation::getFromRawEncoding(Record[Idx++]);
Designators.push_back(Designator(Index, LBracketLoc, EllipsisLoc,
RBracketLoc));
break;
}
}
}
E->setDesignators(Designators.data(), Designators.size());
return NumSubExprs;
}
unsigned PCHStmtReader::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
VisitExpr(E);
return 0;
}
unsigned PCHStmtReader::VisitVAArgExpr(VAArgExpr *E) {
VisitExpr(E);
E->setSubExpr(cast<Expr>(StmtStack.back()));
E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitAddrLabelExpr(AddrLabelExpr *E) {
VisitExpr(E);
E->setAmpAmpLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setLabelLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
Reader.SetLabelOf(E, Record[Idx++]);
return 0;
}
unsigned PCHStmtReader::VisitStmtExpr(StmtExpr *E) {
VisitExpr(E);
E->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setSubStmt(cast_or_null<CompoundStmt>(StmtStack.back()));
return 1;
}
unsigned PCHStmtReader::VisitTypesCompatibleExpr(TypesCompatibleExpr *E) {
VisitExpr(E);
E->setArgType1(Reader.GetType(Record[Idx++]));
E->setArgType2(Reader.GetType(Record[Idx++]));
E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitChooseExpr(ChooseExpr *E) {
VisitExpr(E);
E->setCond(cast<Expr>(StmtStack[StmtStack.size() - 3]));
E->setLHS(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
E->setRHS(cast_or_null<Expr>(StmtStack[StmtStack.size() - 1]));
E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 3;
}
unsigned PCHStmtReader::VisitGNUNullExpr(GNUNullExpr *E) {
VisitExpr(E);
E->setTokenLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
VisitExpr(E);
unsigned NumExprs = Record[Idx++];
E->setExprs(*Reader.getContext(),
(Expr **)&StmtStack[StmtStack.size() - NumExprs], NumExprs);
E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return NumExprs;
}
unsigned PCHStmtReader::VisitBlockExpr(BlockExpr *E) {
VisitExpr(E);
E->setBlockDecl(cast_or_null<BlockDecl>(Reader.GetDecl(Record[Idx++])));
E->setHasBlockDeclRefExprs(Record[Idx++]);
return 0;
}
unsigned PCHStmtReader::VisitBlockDeclRefExpr(BlockDeclRefExpr *E) {
VisitExpr(E);
E->setDecl(cast<ValueDecl>(Reader.GetDecl(Record[Idx++])));
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setByRef(Record[Idx++]);
E->setConstQualAdded(Record[Idx++]);
return 0;
}
//===----------------------------------------------------------------------===//
// Objective-C Expressions and Statements
unsigned PCHStmtReader::VisitObjCStringLiteral(ObjCStringLiteral *E) {
VisitExpr(E);
E->setString(cast<StringLiteral>(StmtStack.back()));
E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
VisitExpr(E);
E->setEncodedType(Reader.GetType(Record[Idx++]));
E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
VisitExpr(E);
E->setSelector(Reader.GetSelector(Record, Idx));
E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
VisitExpr(E);
E->setProtocol(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
VisitExpr(E);
E->setDecl(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setBase(cast<Expr>(StmtStack.back()));
E->setIsArrow(Record[Idx++]);
E->setIsFreeIvar(Record[Idx++]);
return 1;
}
unsigned PCHStmtReader::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
VisitExpr(E);
E->setProperty(cast<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setBase(cast<Expr>(StmtStack.back()));
return 1;
}
unsigned PCHStmtReader::VisitObjCImplicitSetterGetterRefExpr(
ObjCImplicitSetterGetterRefExpr *E) {
VisitExpr(E);
E->setGetterMethod(
cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
E->setSetterMethod(
cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
E->setInterfaceDecl(
cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
E->setBase(cast_or_null<Expr>(StmtStack.back()));
E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitObjCMessageExpr(ObjCMessageExpr *E) {
VisitExpr(E);
E->setNumArgs(Record[Idx++]);
E->setLeftLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setRightLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
E->setSelector(Reader.GetSelector(Record, Idx));
E->setMethodDecl(cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
E->setReceiver(
cast_or_null<Expr>(StmtStack[StmtStack.size() - E->getNumArgs() - 1]));
if (!E->getReceiver()) {
ObjCMessageExpr::ClassInfo CI;
CI.first = cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++]));
CI.second = Reader.GetIdentifierInfo(Record, Idx);
E->setClassInfo(CI);
}
for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
E->setArg(I, cast<Expr>(StmtStack[StmtStack.size() - N + I]));
return E->getNumArgs() + 1;
}
unsigned PCHStmtReader::VisitObjCSuperExpr(ObjCSuperExpr *E) {
VisitExpr(E);
E->setLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 0;
}
unsigned PCHStmtReader::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
VisitStmt(S);
S->setElement(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 3]));
S->setCollection(cast_or_null<Expr>(StmtStack[StmtStack.size() - 2]));
S->setBody(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 1]));
S->setForLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 3;
}
unsigned PCHStmtReader::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
VisitStmt(S);
S->setCatchBody(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 2]));
S->setNextCatchStmt(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 1]));
S->setCatchParamDecl(cast_or_null<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
S->setAtCatchLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
VisitStmt(S);
S->setFinallyBody(StmtStack.back());
S->setAtFinallyLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
unsigned PCHStmtReader::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
VisitStmt(S);
S->setTryBody(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 3]));
S->setCatchStmts(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 2]));
S->setFinallyStmt(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 1]));
S->setAtTryLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 3;
}
unsigned PCHStmtReader::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
VisitStmt(S);
S->setSynchExpr(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 2]));
S->setSynchBody(cast_or_null<Stmt>(StmtStack[StmtStack.size() - 1]));
S->setAtSynchronizedLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 2;
}
unsigned PCHStmtReader::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
VisitStmt(S);
S->setThrowExpr(StmtStack.back());
S->setThrowLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
return 1;
}
//===----------------------------------------------------------------------===//
// C++ Expressions and Statements
unsigned PCHStmtReader::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
unsigned num = VisitCallExpr(E);
E->setOperator((OverloadedOperatorKind)Record[Idx++]);
return num;
}
// Within the bitstream, expressions are stored in Reverse Polish
// Notation, with each of the subexpressions preceding the
// expression they are stored in. To evaluate expressions, we
// continue reading expressions and placing them on the stack, with
// expressions having operands removing those operands from the
// stack. Evaluation terminates when we see a STMT_STOP record, and
// the single remaining expression on the stack is our result.
Stmt *PCHReader::ReadStmt(llvm::BitstreamCursor &Cursor) {
RecordData Record;
unsigned Idx;
llvm::SmallVector<Stmt *, 16> StmtStack;
PCHStmtReader Reader(*this, Record, Idx, StmtStack);
Stmt::EmptyShell Empty;
while (true) {
unsigned Code = Cursor.ReadCode();
if (Code == llvm::bitc::END_BLOCK) {
if (Cursor.ReadBlockEnd()) {
Error("error at end of block in PCH file");
return 0;
}
break;
}
if (Code == llvm::bitc::ENTER_SUBBLOCK) {
// No known subblocks, always skip them.
Cursor.ReadSubBlockID();
if (Cursor.SkipBlock()) {
Error("malformed block record in PCH file");
return 0;
}
continue;
}
if (Code == llvm::bitc::DEFINE_ABBREV) {
Cursor.ReadAbbrevRecord();
continue;
}
Stmt *S = 0;
Idx = 0;
Record.clear();
bool Finished = false;
switch ((pch::StmtCode)Cursor.ReadRecord(Code, Record)) {
case pch::STMT_STOP:
Finished = true;
break;
case pch::STMT_NULL_PTR:
S = 0;
break;
case pch::STMT_NULL:
S = new (Context) NullStmt(Empty);
break;
case pch::STMT_COMPOUND:
S = new (Context) CompoundStmt(Empty);
break;
case pch::STMT_CASE:
S = new (Context) CaseStmt(Empty);
break;
case pch::STMT_DEFAULT:
S = new (Context) DefaultStmt(Empty);
break;
case pch::STMT_LABEL:
S = new (Context) LabelStmt(Empty);
break;
case pch::STMT_IF:
S = new (Context) IfStmt(Empty);
break;
case pch::STMT_SWITCH:
S = new (Context) SwitchStmt(Empty);
break;
case pch::STMT_WHILE:
S = new (Context) WhileStmt(Empty);
break;
case pch::STMT_DO:
S = new (Context) DoStmt(Empty);
break;
case pch::STMT_FOR:
S = new (Context) ForStmt(Empty);
break;
case pch::STMT_GOTO:
S = new (Context) GotoStmt(Empty);
break;
case pch::STMT_INDIRECT_GOTO:
S = new (Context) IndirectGotoStmt(Empty);
break;
case pch::STMT_CONTINUE:
S = new (Context) ContinueStmt(Empty);
break;
case pch::STMT_BREAK:
S = new (Context) BreakStmt(Empty);
break;
case pch::STMT_RETURN:
S = new (Context) ReturnStmt(Empty);
break;
case pch::STMT_DECL:
S = new (Context) DeclStmt(Empty);
break;
case pch::STMT_ASM:
S = new (Context) AsmStmt(Empty);
break;
case pch::EXPR_PREDEFINED:
S = new (Context) PredefinedExpr(Empty);
break;
case pch::EXPR_DECL_REF:
S = new (Context) DeclRefExpr(Empty);
break;
case pch::EXPR_INTEGER_LITERAL:
S = new (Context) IntegerLiteral(Empty);
break;
case pch::EXPR_FLOATING_LITERAL:
S = new (Context) FloatingLiteral(Empty);
break;
case pch::EXPR_IMAGINARY_LITERAL:
S = new (Context) ImaginaryLiteral(Empty);
break;
case pch::EXPR_STRING_LITERAL:
S = StringLiteral::CreateEmpty(*Context,
Record[PCHStmtReader::NumExprFields + 1]);
break;
case pch::EXPR_CHARACTER_LITERAL:
S = new (Context) CharacterLiteral(Empty);
break;
case pch::EXPR_PAREN:
S = new (Context) ParenExpr(Empty);
break;
case pch::EXPR_UNARY_OPERATOR:
S = new (Context) UnaryOperator(Empty);
break;
case pch::EXPR_SIZEOF_ALIGN_OF:
S = new (Context) SizeOfAlignOfExpr(Empty);
break;
case pch::EXPR_ARRAY_SUBSCRIPT:
S = new (Context) ArraySubscriptExpr(Empty);
break;
case pch::EXPR_CALL:
S = new (Context) CallExpr(*Context, Stmt::CallExprClass, Empty);
break;
case pch::EXPR_MEMBER:
S = new (Context) MemberExpr(Empty);
break;
case pch::EXPR_BINARY_OPERATOR:
S = new (Context) BinaryOperator(Empty);
break;
case pch::EXPR_COMPOUND_ASSIGN_OPERATOR:
S = new (Context) CompoundAssignOperator(Empty);
break;
case pch::EXPR_CONDITIONAL_OPERATOR:
S = new (Context) ConditionalOperator(Empty);
break;
case pch::EXPR_IMPLICIT_CAST:
S = new (Context) ImplicitCastExpr(Empty);
break;
case pch::EXPR_CSTYLE_CAST:
S = new (Context) CStyleCastExpr(Empty);
break;
case pch::EXPR_COMPOUND_LITERAL:
S = new (Context) CompoundLiteralExpr(Empty);
break;
case pch::EXPR_EXT_VECTOR_ELEMENT:
S = new (Context) ExtVectorElementExpr(Empty);
break;
case pch::EXPR_INIT_LIST:
S = new (Context) InitListExpr(Empty);
break;
case pch::EXPR_DESIGNATED_INIT:
S = DesignatedInitExpr::CreateEmpty(*Context,
Record[PCHStmtReader::NumExprFields] - 1);
break;
case pch::EXPR_IMPLICIT_VALUE_INIT:
S = new (Context) ImplicitValueInitExpr(Empty);
break;
case pch::EXPR_VA_ARG:
S = new (Context) VAArgExpr(Empty);
break;
case pch::EXPR_ADDR_LABEL:
S = new (Context) AddrLabelExpr(Empty);
break;
case pch::EXPR_STMT:
S = new (Context) StmtExpr(Empty);
break;
case pch::EXPR_TYPES_COMPATIBLE:
S = new (Context) TypesCompatibleExpr(Empty);
break;
case pch::EXPR_CHOOSE:
S = new (Context) ChooseExpr(Empty);
break;
case pch::EXPR_GNU_NULL:
S = new (Context) GNUNullExpr(Empty);
break;
case pch::EXPR_SHUFFLE_VECTOR:
S = new (Context) ShuffleVectorExpr(Empty);
break;
case pch::EXPR_BLOCK:
S = new (Context) BlockExpr(Empty);
break;
case pch::EXPR_BLOCK_DECL_REF:
S = new (Context) BlockDeclRefExpr(Empty);
break;
case pch::EXPR_OBJC_STRING_LITERAL:
S = new (Context) ObjCStringLiteral(Empty);
break;
case pch::EXPR_OBJC_ENCODE:
S = new (Context) ObjCEncodeExpr(Empty);
break;
case pch::EXPR_OBJC_SELECTOR_EXPR:
S = new (Context) ObjCSelectorExpr(Empty);
break;
case pch::EXPR_OBJC_PROTOCOL_EXPR:
S = new (Context) ObjCProtocolExpr(Empty);
break;
case pch::EXPR_OBJC_IVAR_REF_EXPR:
S = new (Context) ObjCIvarRefExpr(Empty);
break;
case pch::EXPR_OBJC_PROPERTY_REF_EXPR:
S = new (Context) ObjCPropertyRefExpr(Empty);
break;
case pch::EXPR_OBJC_KVC_REF_EXPR:
S = new (Context) ObjCImplicitSetterGetterRefExpr(Empty);
break;
case pch::EXPR_OBJC_MESSAGE_EXPR:
S = new (Context) ObjCMessageExpr(Empty);
break;
case pch::EXPR_OBJC_SUPER_EXPR:
S = new (Context) ObjCSuperExpr(Empty);
break;
case pch::EXPR_OBJC_ISA:
S = new (Context) ObjCIsaExpr(Empty);
break;
case pch::STMT_OBJC_FOR_COLLECTION:
S = new (Context) ObjCForCollectionStmt(Empty);
break;
case pch::STMT_OBJC_CATCH:
S = new (Context) ObjCAtCatchStmt(Empty);
break;
case pch::STMT_OBJC_FINALLY:
S = new (Context) ObjCAtFinallyStmt(Empty);
break;
case pch::STMT_OBJC_AT_TRY:
S = new (Context) ObjCAtTryStmt(Empty);
break;
case pch::STMT_OBJC_AT_SYNCHRONIZED:
S = new (Context) ObjCAtSynchronizedStmt(Empty);
break;
case pch::STMT_OBJC_AT_THROW:
S = new (Context) ObjCAtThrowStmt(Empty);
break;
case pch::EXPR_CXX_OPERATOR_CALL:
S = new (Context) CXXOperatorCallExpr(*Context, Empty);
break;
}
// We hit a STMT_STOP, so we're done with this expression.
if (Finished)
break;
++NumStatementsRead;
if (S) {
unsigned NumSubStmts = Reader.Visit(S);
while (NumSubStmts > 0) {
StmtStack.pop_back();
--NumSubStmts;
}
}
assert(Idx == Record.size() && "Invalid deserialization of statement");
StmtStack.push_back(S);
}
assert(StmtStack.size() == 1 && "Extra expressions on stack!");
return StmtStack.back();
}